List<Path> classes = dispatched.get(JavaPathType.CLASSES);
        List<Path> modules = dispatched.get(JavaPathType.MODULES);
        List<Path> unresolved = dispatched.get(PathType.UNRESOLVED);
        assertEquals(3, dispatched.size());
        assertEquals(1, unresolved.size());
        assertEquals(8, classes.size()); // "plexus.pom" and "junit.jar" are excluded.

                // Java types
                new DefaultType(
                        Type.JAR, Language.JAVA_FAMILY, "jar", null, false, JavaPathType.CLASSES, JavaPathType.MODULES),
                new DefaultType(Type.JAVADOC, Language.JAVA_FAMILY, "jar", "javadoc", false, JavaPathType.CLASSES),

        "process-sources",
        "generate-resources",
        "process-resources",
        "compile",
        "process-classes",
        "generate-test-sources",
        "process-test-sources",
        "generate-test-resources",
        "process-test-resources",
        "test-compile",
        "process-test-classes",
        "test",
        "prepare-package",
        "package",
        "pre-integration-test",

        File txtFile = new File("target/test-classes/source.txt");
        FileSource source = new FileSource(txtFile);
        assertEquals(txtFile.getAbsolutePath(), source.getLocation());
    }

    @Test
    void testGetFile() {
        File txtFile = new File("target/test-classes/source.txt");
        FileSource source = new FileSource(txtFile);
        assertEquals(txtFile.getAbsoluteFile(), source.getFile());
    }

        PathType selected = null;
        boolean classes = false;
        boolean modules = false;
        boolean unknown = false;
        for (PathType type : types) {
            if (filter.test(type)) {
                if (JavaPathType.CLASSES.equals(type)) {
                    classes = true;
                } else if (JavaPathType.MODULES.equals(type)) {

        PathType selected = null;
        boolean classes = false;
        boolean modules = false;
        boolean unknown = false;
        for (PathType type : types) {
            if (filter.test(type)) {
                if (JavaPathType.CLASSES.equals(type)) {
                    classes = true;
                } else if (JavaPathType.MODULES.equals(type)) {

     * or {@link JavaPathType#CLASSES} otherwise. A JAR file without module descriptor but with
     * an "Automatic-Module-Name" manifest attribute is considered modular.
     */
    public JavaPathType getPathType() {
        return descriptors.isEmpty() ? JavaPathType.CLASSES : JavaPathType.MODULES;
    }

    /**

        this.packages = Collections.unmodifiableSet(new HashSet<>(packages));
        this.key = key;
        this.configuration = configuration;
    }

    /**
     * Returns ClassLoader used to load extension classes.
     */
    public ClassRealm getClassRealm() {
        return realm;
    }

    /**
     * Returns artifacts exported by the extension, identified by groupId:artifactId string key.
     */

    /**
     * Artifact type name for a JAR file that can be placed either on the class-path or on the module-path.
     * The path (classes or modules) is chosen by the plugin, possibly using heuristic rules.
     * This is the behavior of Maven 3.
     */
    String JAR = "jar";

    /**
     * Artifact type name for a fat-JAR file that can be only on the class-path.

                .findFirst()
                .orElse(null);
    }

    /**
     * Determines whether the specified artifact refers to test classes.
     *
     * @param artifact The artifact to check, must not be {@code null}.
     * @return {@code true} if the artifact refers to test classes, {@code false} otherwise.
     */
    private static boolean isTestArtifact(Artifact artifact) {